The (re-)discovery of g350.1-0.3: a young, luminous supernova remnant and its neutron star

B. M. Gaensler, A. Tanna, P. O. Slane, C. L. Brogan, J. D. Gelfand, N. M. Mcclure-Griffiths, F. Camilo, C. Y. Ng, J. M. Miller

Research output: Contribution to journalArticle

Abstract

We present an XMM-Newton observation of the long-overlooked radio source G350.1 -0.3. The X-ray spectrum of G350.1-0.3 can be fit by a shocked plasma with two components: a high-temperature (1.5 keV) region with a low ionization timescale and enhanced abundances, plus a cooler (0.36 keV) component in ionization equilibrium and with solar abundances. The X-ray spectrum and the presence of nonthermal, polarized, radio emission together demonstrate that G350.1-0.3 is a young, luminous supernova remnant (SNR), for which archival H i and 12CO data indicate a distance of 4.5 kpc. The diameter of the source then implies an age of only ≈900 years. The SNR's distorted appearance and small size and the presence of 12CO emission along the SNR's eastern edge all indicate that the source is interacting with a complicated distribution of dense ambient material. An unresolved X-ray source, XMMU J172054.5-372652, is detected a few arcminutes west of the brightest SNR emission. The thermal X-ray spectrum and lack of any multiwavelength counterpart suggest that this source is a neutron star associated with G350.1-0.3, most likely a "central compact object," as seen coincident with other young SNRs such as Cassiopeia A.

Original languageEnglish (US)
Pages (from-to)L37-L40
JournalAstrophysical Journal
Volume680
Issue number1 PART 2
DOIs
StatePublished - 2008

Keywords

  • Ism: Individual (g350.1-0.3)
  • Stars: Individual (xmmu j172054.5-372652)
  • Stars: Neutron
  • Supernova remnants

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Gaensler, B. M., Tanna, A., Slane, P. O., Brogan, C. L., Gelfand, J. D., Mcclure-Griffiths, N. M., Camilo, F., Ng, C. Y., & Miller, J. M. (2008). The (re-)discovery of g350.1-0.3: a young, luminous supernova remnant and its neutron star. Astrophysical Journal, 680(1 PART 2), L37-L40. https://doi.org/10.1086/589650